KR100498861B1 - Water softner system - Google Patents

Abstract

The present invention relates to a hard water softening device having an automatic hardness tester, having an ion exchange resin therein, and attaching the hardness component contained in raw water supplied from the outside to the ion exchange resin through the ion exchange to remove the hardness component. At least two water purifiers 10 and 20 thereby producing softened treated water; Salt water tank 40 for supplying the brine for the regeneration of the ion exchange resin to the water purifier of the regeneration process is saturated ion exchange capacity of the water purifier (10, 20); Reference water tank 30 for receiving and storing the treated water of the reference value capable of ion exchange in the water purifier (10, 20); Measuring the hardness of the reference water for the reference water tank 30 and receiving the treated water or flushing water from the water purifier of the normal water softening process of the water purifier (10, 20) or the water purifier of the ion exchange resin regeneration process, respectively A hardness measuring device 60 which repeatedly measures the hardness of the treated water or the wash water and provides the hardness measured value of the reference water and the hardness measured value of the treated water or the wash water; And performing control for soft operation and regeneration of the water purifiers 10 and 20, but if the hardness measurement value for the treated water of the water purifier that is normally operated as the hardness measurement result of the hardness measuring device 60 is equal to or greater than the set operation reference value. An operation control unit 70 for stopping the operation of the water purifier and replacing it with an atmospheric water purifier, and completing the regeneration of the corresponding water purifier when the hardness measurement value for the flushing water of the water purifier to be regenerated is equal to or lower than the set regeneration reference value; Characterized in that it comprises a.

Description

Hard water softening device with automatic hardness tester {WATER SOFTNER SYSTEM}

The present invention relates to a hard water softening device having an automatic hardness tester, and more particularly, in the hard water softening device replacing at least two water purifiers, the hardness component of the scale component dependent on the raw water and its treated water (TOTAL HARDNESS. ( Automatic measurement and quantification of Ca2 ⁺ and Mg2 ⁺ )) to determine the saturation and flushing of cation exchange resin capacity in one cycle including the water flow and regeneration of each water purifier. It relates to a hard water softening device having an automatic hardness tester for automated water reclamation and water purifier replacement, and a method of operating the same.

The hard water softener improves the water quality of the raw water passing through the ion exchange resin by removing the impurities contained in the raw water by adsorbing the ion exchange resin using the ion exchange characteristics of the cation exchange resin. Impurities adsorbed by long-term use are replaced with sodium chloride, which is supplied separately, and discharged to the outside.

Such soft water softening device is called hard water softening device or water softener because it shows excellent effect of softening by adsorption removal and softening of magnesium or calcium ions affecting the hardness of water. When supplying sodium ions to the cation exchange resin, the cation exchange resin exchanges impurities and sodium ions to discharge the impurities, and the discharged impurities are released to the outside by appropriate means, so that the saturation regeneration of the cation exchange resin is repeated. Will be made.

In most cases, water softeners are used to remove the hardness components (Ca2 ⁺ , Mg2 ⁺ ) of scale components present in raw water. The purified water purifier enters the regeneration process and replaces the other regenerated atmospheric water purifiers so that the water softening can be continuously performed by the replacement use.

Currently, a representative method for determining the replacement time of the water purifier in such a soft water softener is to take a sample of the treated water and use the ammonia buffer and the EBT reagent to dissolve the Ca 2 ⁺ , Mg 2 ⁺ emd divalent cation metal in the water. If the number of samples is red by adding buffer solution and EBT reagent to 50 ml of the converted sample according to the raw water hardness (CaCo ₃ ppm) corresponding to the water content, there is a method of titrating until the red color disappears with the hardness detection EDTA solution (total hardness ppm). = Consumption ml * Factor * 1000 / sample volume (ml)).

In other words, after confirming that the cation exchange resin exchange capacity is saturated with the test sample water, the water purifier with a saturated cation exchange capacity is replaced with an atmospheric water purifier, and the saturated water purifier is charged with salt water (NaCl) during the regeneration cycle. Thereby activating the cationic resin and waiting for the next replacement use.

However, in order to automate such a soft water softening device, there is no suitable sensor to analyze the hardness of treated water in real time, so in the field, the average exchange capacity of each water purifier is calculated (Ton) and a safety factor is given after using a certain amount of treated water The method of automatic replacement or the method of calculating the average use time per cyclone and giving a safety factor to the automatic replacement is used. Both of these methods are used in the soft water softening process where there is a large deviation in daily average water usage. The application is very difficult and there is a problem that there is always a great risk that the raw water and the untreated water due to the saturation of exchange capacity always enter the target process.

The present invention has been made to solve the above problems, the object of the hardness component (Ca2 ⁺ , Mg2 ⁺⁾ of the scale component dependent on the raw water and the treated water in the hard water softening device to replace at least two water purifiers ) Automatic measurement and quantification, and real-time measuring and analyzing the saturation of the cation exchange resin capacity and the completion of washing in the operation cycle including the water flow and regeneration of each water purifier with automatic hardness tester It is to provide a hard water softening device having an automatic hardness tester to be automated.

Hard water softening device having an automatic hardness measuring device of the present invention for achieving the above object, having an ion exchange resin therein, by attaching the hardness component contained in the raw water supplied from the outside to the ion exchange resin through the ion exchange At least two water purifiers 10 and 20 for producing softened treated water by removing the hardness component; Salt water tank 40 for supplying the brine for the regeneration of the ion exchange resin to the water purifier of the regeneration process is saturated ion exchange capacity of the water purifier (10, 20); Reference water tank 30 for receiving and storing the treated water of the reference value capable of ion exchange in the water purifier (10, 20); Measuring the hardness of the reference water for the reference water tank 30 and receiving the treated water or flushing water from the water purifier of the normal water softening process of the water purifier (10, 20) or the water purifier of the ion exchange resin regeneration process, respectively A hardness measuring device 60 which repeatedly measures the hardness of the treated water or the wash water and provides the hardness measured value of the reference water and the hardness measured value of the treated water or the wash water; And performing control for soft operation and regeneration of the water purifiers 10 and 20, but if the hardness measurement value for the treated water of the water purifier that is normally operated as the hardness measurement result of the hardness measuring device 60 is equal to or greater than the set operation reference value. An operation control unit 70 for stopping the operation of the water purifier and replacing it with an atmospheric water purifier, and completing the regeneration of the corresponding water purifier when the hardness measurement value for the flushing water of the water purifier to be regenerated is equal to or lower than the set regeneration reference value; Characterized in that it comprises a.

Preferably, the hardness of the reference water stored in the reference water tank 30 is the hardness 0 (3500), the operation of the treated water hardness to determine whether to continue the soft water operation of the water purifier in normal operation in the movable control unit 70 The reference value is hardness 2 (4500), and the regeneration reference value of the wash water hardness for determining whether to continue washing with water during the regeneration operation of the water purifier is characterized in that the hardness 0 (3500).

More preferably, the hardness measuring device 60, the reagent tank (63, 64) for storing an indicator for promoting the complex salt chemical reaction of water; Receives a predetermined amount of reference water from the reference water tank 30 or treated water from the water purifiers 10 and 20 as measurement water, and receives reaction reagents from the reagent tanks 63 and 64. A reaction tank 61 mixed with the measured water; A beam sensor (65) which irradiates a transmission beam at a predetermined angle to the reaction tank (61) to recognize the degree of complexing with respect to the number of measurements in the reaction tank (61); A measurement control unit 66 for quantifying the change in complexing dyeing value of the measured number recognized by the beam sensor 65 by the hardness measurement value; And a measurement value output unit 67 which displays the hardness measurement value of the measurement control unit 66 to the outside and provides it to the movable control unit 70. Characterized in that it comprises a.

More preferably, the sensor beam transmission angle of the beam sensor 65 with respect to the reaction tank 61 is fixed to 85 degrees with respect to the vertical direction of the reaction tank 61 so that the corresponding sensor beam is irradiated and transmitted to the side of the reaction tank. It features.

More preferably, the reagent tanks 63 and 64 store EBT reagents and NH ₃ reagents for the complexation of the measured water, respectively, and the EBT reagent and the NH ₃ reagent added to the corresponding reaction tank 61 when the measured water is salted. The input ratio is characterized in that 18: 8.

More preferably, the hardness measuring device 60 is characterized in that it further comprises an air stirring valve for promoting the complex salt chemical reaction of the reaction reagent and the measurement water in the reaction tank (61).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, the present invention, in the hard water softening device to replace the at least two water purifiers automatically measured and quantified the hardness components (Ca2 ⁺ , Mg2 ⁺ ) of the scale components that are dependent on the raw water and the treated water, and quantified by A hard water softening device with an automatic hardness tester to automate the soft water regeneration and water purifier replacement of water purifiers by real-time measuring and analyzing the saturation of the cation exchange resin capacity and the completion of washing in a single cycle including regeneration. Although it will be described as a preferred embodiment, the technical idea of the present invention is not limited to this, but can be variously modified and implemented by those skilled in the art.

The hard water softening device having an automatic hardness meter to which the present invention is applied includes at least two water purifiers 10 and 20, a salt water tank 40 for supplying brine for regeneration of the water purifier, and a condensate tank for storing the treated water of the water purifier. (50), the reference water tank 30, which stores the optimum hardness reference water for regeneration of the water purifier, and detects the movable treatment water or the regeneration water washing water of the water purifiers 10 and 20, and performs real-time hardness measurement. Compared with the hardness reference number of the water tank 30, the hardness measuring device 60 determines the start of the water purifier regeneration process and the end of the water purifier washing process according to whether or not the predetermined setting criterion is satisfied. Automatic control to the OFF state to drive the soft water operation and regeneration operation, the operation to proceed with the operation, replacement and regeneration of each water purifier (10, 20) in accordance with the hardness measurement results of the hardness measuring device (60) It consists of a fisherman 70.

In the following, the water softening device of the present invention is described as having two water purifiers 20 and 30 for the convenience of description, but the principle of the present invention is not limited thereto and any water softening device having at least two water softeners. Of course, it can be applied to.

Generally, the operation of hard water softening device can be divided into water supply process and regeneration process. The water supply process removes hardness components (Ca2 ⁺ , Mg2 ⁺ ) from raw water with Na-type cation exchange resin to regulate the hardness (PPM as CaCo ₃ ). It is a process of taking in the following years. In addition, the regeneration process is a process of restoring the ion exchange capacity again by using a regeneration material (NaCl), which has lost the ion exchange capacity by water flow, which is used to remove water suspended in the ion exchange resin by spraying water upward. It is classified into a backwashing process, a chemical pouring process for injecting and activating regeneration materials, and a washing process for re-washing the ion exchange resin through raw water.

Referring to FIG. 1, the first water purifier 10 performs a function of softening the raw water by adsorbing the hardness component contained in the raw water supplied from the outside to the cation exchange resin therein, as shown in the drawing. In operation, external raw water (ground water) is supplied through 1-2 valves to soften it, and the softened treated water is stored in the condensate tank 50 through a line of 1-5 valves.

In addition, the first water purifier 10 is supplied with brine (NaCl) from the brine tank 40 through the 1-6 valve during regeneration. Where 1-1 valve is for drain, 1-4 valve is for drain and measuring water supply, 1-3 valve is for backwash.

Similarly, the second water purifier 20, which is provided together with the first water purifier 10 to be used for exchange, also has a function of softening the raw water by adsorbing hardness components contained in the raw water supplied from the outside to the cation exchange resin therein. In operation, as shown in the drawing, external raw water (groundwater) is supplied through the 2-2 valve to soften it and the softened treated water is supplied to the condensate tank 50 through the line of the 2-5 valve. Will be saved. The actual installation example of such 1st water purifier 10 and the 2nd water purifier 20 is shown in FIG.

And like the first water purifier 10, the second water purifier 10 is supplied with brine (NaCl) from the brine tank 40 through the 2-6 valve during regeneration. Where 2-1 valve is for drain, 2-4 valve is for drain and measuring water supply, 2-3 valve is for backwash.

Meanwhile, the brine tank 40 serves to supply a regenerant for regeneration, that is, saline (NaCl), to the water purifiers 10 and 20, and the brine tank 40 includes a main regenerator for making proper saline. 4-1 valve to be supplied, 4-2 valve to supply the raw water, and 4-3 discharge pump for supplying the brine to each of the water purifier (10, 20) is provided, for controlling the brine discharge level to the water purifier The brine discharge level sensor 41 and the raw water input level sensor 42 for adjusting the raw water input level to the inside is also provided.

The reference water tank 30 is to store the reference water for each time to match the reference hardness for the hardness measurement of the water purifier (10, 20), the movable hardness of the water purifier supplied through the 3-1 valve from the water purifier It is filled with a reference number of hardness 0 (3500) which is a reference value.

Here, the reference water filled in the reference water tank 30 may function as a comparison material for determining whether to stop the operation timing of the water purifier in operation, that is, whether the hardness 2 (4500) of the operation water purifier treatment water is reached. The water is filled with raw water of hardness 0 (3500), which is the completion point of the washing of water, and the hardness 2 (4500), which is the starting point of regeneration of water purifier, is stopped through the reference water (hardness 0) of the reference water tank 30. ) It is compared to determine whether it is reached.

On the other hand, the hardness measuring device 60 performs a hardness measurement on the treated water or flushing water of the water purifier (10, 20), whether the treated water exceeds the standard hardness of the treated water or whether the water wash standard hardness of the wash water is not The hardness measurement device 60 is determined by the reaction tank 61, EBT reagent tank 63, NH ₃ reagent tank 64, beam sensor 65, the measurement control unit 66, the measured value It consists of an output unit 67, the actual installation example of such a hardness measuring device 60 is shown in Figs.

That is, the hardness measuring device 60 first performs continuous hardness measurement on the treated water by the softening process for the water purifiers 10 and 20 that are in operation, and the treated water determines whether the water purifier continues to be used. It continuously monitors whether the hardness of the treated water above the standard hardness 2 is exceeded. This is to allow the administrator to immediately recognize the replacement timing of the water purifier.

In addition, the hardness measuring device 60 performs a hardness measurement on the washing water according to the washing process of the water purifier (10, 20) being regenerated, the hardness of the washing water reference hardness to determine whether or not to continue the washing process It monitors whether or not it satisfies 0. This is to allow the administrator to immediately recognize the washing end timing, which means that the water purifier is completed.

Looking at the hardness measuring device 60 in more detail, the reaction tank 61 having the transparent outer surface is filled with the number of measurement targets to measure the hardness, that is, the treated water during the softening process or the wash water during the washing process and the EBT The measurement auxiliary reagents of the reagent tank 63 and the NH ₃ reagent tank 64 are introduced at a predetermined ratio. Accordingly, when the transmission beam of the beam sensor 65 is transmitted to the reaction tank, the measurement control unit 66 The appropriate hardness measurement is quantified through the change in the dyeing coloration of the reactor 61, and the hardness measurement is reported to the manager through the measurement output unit 67.

Here, the hardness measuring device 60 first measures the hardness of the reference water of the reference water tank 30 when measuring the hardness of the treated water of the water purifier (10, 20) in the softening process (hardness 0 (3500) Next, hardness measurement of the treated water of the water purifiers 10 and 20 in the corresponding softening process is performed. This process is continuously repeated at a predetermined time interval (for example, 20 minutes) during the softening process of the corresponding water purifier. Will be.

Further, the hardness measuring device 60 first measures the hardness of the reference water of the reference water tank 30 even when measuring the hardness of the water washing water of the water purifiers 10 and 20 during the water washing process during regeneration (hardness 0 ( 3500)) and next, the hardness measurement of the washing water of the water purifier (10, 20) during the washing process is performed, and this process is continuously performed at a predetermined time interval (for example, 10 minutes) during the washing process of the water purifier. It will be repeated.

At this time, the reaction tank 61 is provided with a measuring water level sensor 61 to control the degree of inflow of the internal measuring water (treated water or flushing water) to introduce the measuring water at a predetermined level (for example, 500 cc).

In addition, the EBT reagent tank 63 and the NH ₃ reagent tank 64 are provided with discharge pumps 6-5 and 6-6, respectively, so that the quantitative reaction reagents for the optimal reaction are injected, and the motor rotates. According to the rotation ratio of the discharge pump (6-5, 6-6) of the tube pump method for determining the discharge of the EBT reagent and NH ₃ reagent according to 18, that is, that is, the EBT reagent tank 63 and It is preferable that the ratio of the EBT reagent and the NH ₃ reagent introduced into the reactor 61 into which the 500 cc measurement water flows from the NH ₃ reagent tank 64 is 18: 8.

In addition, the transmission angle of the sensor beam irradiated in order to determine the degree of complexing with respect to the number of measurements in the reaction tank 61 in the beam sensor 65 is a horizontal direction through the reaction tank 61 from the side, and more optimal It is preferable that the transmission angle of the sensor beam is irradiated to the side of the reactor as 85 degrees with respect to the vertical direction of the reactor 61 so that the complex salt sensor sensitivity is achieved.

The output value of the beam sensor 65 is set to output 3500 according to its own output standard in the situation of hardness 0, which is a standard of general training, and output 4500 in hardness 2, but the present invention is not limited thereto.

In addition, the reactor 61 is 6-3 valve for the reference water inlet of the reference water tank 30, 6-1 valve and 6-2 for the soft water treatment water or regeneration flush water inlet of the water purifier (10, 20) A valve is provided, and a 6-7 valve for air agitation of chemical reaction promotion of the reaction tank 61 and a 6-4 valve for external drainage of the reaction water are provided.

On the other hand, the movable control unit 70 drives the soft water operation and the regeneration operation of the water purifier by automatically controlling the valves of the respective parts consisting of automatic valves in the ON / OFF state according to the process, the hardness of the hardness measuring device 60 The water purifiers 10 and 20 are operated, replaced and regenerated according to the measurement result.

Hereinafter, with reference to Figure 6 will be described in detail the operation method of the water softening device having such an automatic hardness measuring device.

First, one water purifier 10 of the first water purifier 10 and the second water purifier 20 is normally operated to discharge the soft water, and the other water purifier 20 is in the standby state after the regeneration is completed (S10). ).

At this time, 1-2 valves for the inflow of raw water and 1-5 valves for the discharge of the treated water in the first water purifier 10 that is operating normally is ON, the remaining 1-1 valves, 1-3 valves , 1-4 valve and 1-6 valve are OFF.

Then, all the valves (2-1 valve, 2-2 valve, 2-3 valve, 2-4 valve, 2-5 valve and 2-6 valve) of the second water purifier 20 in the standby state after the regeneration is completed. OFF state.

In addition, all the valves and modules (6-1 valves, 6-2 valves, 6-3 valves, 6-4 valves, 6-5 valves, 6-6 valves, 6 -7 valve, reactor level sensor 62 and measured value output section 67 are OFF.

In addition, all of the valves (4-2 valve and 4-3 valve) except the 4-1 valve for regenerant injection are OFF in the brine tank 40 in charge of the brine supply for regeneration.

Therefore, in the normally operated first water purifier 10, raw water is introduced through 1-2 valves, and after the self-training process, the treated water is discharged to the condensate tank 50 through the 1-5 valves. .

In this case, all the valves are preferably active automatic valves which are automatically ON / OFF according to the setting and control in the automatic control unit 70.

Thereafter, automatic hardness measurement of the hardness measuring device 60 for the first water purifier 10 that is normally operated is started after a certain waiting time (for example, 8 hours) (S11). This is because the hardness automatic measurement of the hardness measuring device 60 with respect to the first water purifier 10 is automatically performed at the time of washing with brine of the second water purifier 20 in the regeneration process (takes about 2 hours 30 minutes). This is to avoid overlapping. Of course, the measurement latency should be less than the statistical water purifier replacement time (e.g. 15-20 hours).

Next, after the hardness measurement waiting time of the normally operated first water purifier 10, in the hardness measuring device 60, the reference number quantified to hardness 0 (3500) according to 50 Step as shown in Table 1 The hardness of the reference water of the tank 30 is measured, and the hardness of the treated water of the first water purifier 10 in the operating state is measured, and the respective measured hardness is reported to the manager through the measured value output unit 67 (S20). .

Step Treatment contents Step Treatment contents 0 Waiting 28 Rinse 2 (5s) 10 Drain (20s) 29 Drain (20s) 11 Rinse 1 (5s) 30 Treated water supply (0.1 s) 12 Drain (20s) 31 Stable (1s) 13 Rinse 2 (5s) 32 Drain (20s) 14 Drain (20s) 36 Rinse 1 (5s) 15 Reference water supply (0.1 s) 37 Drain (20s) 16 Standard water stability (1s) 38 Rinse 2 (5s) 17 EBT reagent input (18) 39 Drain (20s) 18 NH3 reagent input (8) 40 Treated water supply (0.1 s) 19 Stable atmosphere (5s) 41 Stable atmosphere (1s) 20 AIR stirring (60s) 45 EBT reagent input (18) 21 Mixed Stable Atmosphere (10s) 46 NH3 reagent input (8) 22 Hardness measurement 47 Stable atmosphere (1s) 25 Drain (20s) 48 AIR stirring (60s) 26 Rinse 1 (5s) 49 Mixed Stable Atmosphere (10s) 27 Drain (20s) 50 Hardness measurement

Referring to Table 1 with reference to Table 1 for the step S20, the hardness automatic measurement process for such a mobile water purifier as follows.

First, the hardness measuring device 60 is in a standby state for hardness measurement (0 Step).

The hardness measuring device 60 turns on the 6-1 valve on the water purifier side and the 6-4 valve on the drain for about 20 seconds to drain the dead person in the line (10 Step).

Next, the hardness measuring device 60 is the 6-1 valve to the ON state for about 5 seconds to first wash the reaction tank 61 in the first rinse process (11 Step), and again about 6-4 valve Make it completely drained for 20 seconds (12 Steps).

In addition, the hardness measuring device 60 again turns the 6-1 valve on for about 5 seconds, and then secondly washes the corresponding reaction tank 61 by a second rinsing process (13 Step), and then again cleans the 6-4 valve. Turn it on for 20 seconds and drain completely (14 Steps).

Subsequently, the hardness measuring device 60 turns on the 6-3 valve for about 0.1 second to receive the reference water for hardness measurement, thereby obtaining the reference water quantified by the hardness 0 (3500) from the reference water tank 30. It is introduced into the reaction tank 61, the amount of the reference water flowing into the reaction tank 61 is detected by the reaction tank level sensor 62 is interrupted by about 500cc flows after the corresponding 6-3 valve is turned off (15 Step).

Then, the hardness measuring device 60 stabilizes the reference water in the reaction tank 61 for about 1 second (16 Step).

Next, the hardness measuring device 60 rotates the 6-5 discharge pump of the EBT reagent tank 63 by 18 rotations to inject the quantitative EBT reagent into the reactor 61 (17 Step), and at the same time, the NH ₃ The 6-6 discharge pump of the reagent tank 64 was rotated 8 times, and the quantitative NH ₃ reagent was introduced into the reactor 61 by 18 steps. The hardness component (Ca2 ⁺ ,) of the reference water introduced into the reactor 61 was added. Mg ²⁺ ) is complexed so that hardness can be measured.

At this time, the hardness component (Ca2 ⁺ , Mg2 ⁺ ) of the reference water is complexed according to the input of the reaction reagent (EBT reagent, NH ₃ reagent), the color change occurs, the higher the concentration of the hardness component is closer to the wine-colored It is complexed, and the lower the concentration of the hardness component, the closer to blue. The 6-5 discharge pump and 6-6 discharge pump determine the emission of EBT reagent and NH ₃ reagent according to the motor rotation. As such, by quantifying the ratio of 18: 8, it is possible to induce a complex salt reaction for an optimal hardness measurement environment.

Then, the hardness measuring device 60 is quantified by the reaction reagent to stabilize the reaction tank 61 containing the reference water to proceed the complex salt reaction for about 5 seconds (16 Step).

Thereafter, the hardness measuring device 60 opens the 6-5 valve for about 60 seconds to inject the outside air into the reaction tank 61 to perform an air stirring process for completely reacting the internal reference water with the EBT reagent and the NH ₃ reagent. (20 Step)

The hardness measuring device 60 stabilizes the reaction tank 61 filled with the reference water, the EBT reagent, and the NH ₃ reagent for about 10 seconds to prevent the reference water, which is the measurement target, from shaking (21 Step).

In addition, the hardness measuring device 60 transmits the transmission beam through the beam sensor 65 with respect to the reference water that is the measurement target in the reaction tank 61, and thus the change in the coloration of the internal reference water is measured by the measurement control unit 66. Detects through and quantifies and reports the hardness measurement value (hardness 0 (3500)) to the manager through the measurement output unit 67 (22 Step).

At this time, the hardness measurement value for the reference water is the hardness 0 (3500) is output, because the reference water itself is set to the hardness 0, this reference water is washed with water at the time of regeneration of each water purifier (10, 20) This is possible because the reference water is newly filled at the time of measuring hardness 0, which will be described in more detail below.

Next, the hardness measuring device 60 has completed the hardness measurement for the reference water to completely discharge the reaction water in the reaction tank 61, that is, the mixed water of the reference water, the hardness measurement is completed and the EBT reagent and NH ₃ reagent The 6-4 valve is completely opened for 20 seconds (25 Step).

Next, the hardness measuring device 60 is the 6-1 valve to the ON state for about 5 seconds to first wash the reaction tank 61 in the first rinsing process (26 Step), and again about 6-4 valve Turn it on for 20 seconds and drain completely (27 Steps).

In addition, the hardness measuring device 60 again turns the 6-1 valve on for about 5 seconds, and then secondly washes the corresponding reaction tank 61 by a second rinse process (28 Step), and then again cleans the 6-4 valve. Turn it on for 20 seconds and drain completely (29 Steps).

Subsequently, the hardness measuring device 60 turns on the 6-1 valve for about 0.1 seconds to receive the currently produced treatment water and supplies the treated water treated from the first water purifier 10 currently operated to the corresponding reaction tank ( 61), the amount of the treated water flowing into the reaction tank 61 is controlled by the reaction tank level sensor 62, and after about 500cc is introduced, the corresponding 6-1 valve is turned off (30 Step).

Then, the hardness measuring device 60 stabilizes the treated water in the reaction tank 61 for about 1 second (31 Step).

In addition, in order to wash and drain the reactor 61 again, the hardness measuring device 60 completely opens the 6-4 valve for 20 seconds to completely discharge the treated water in the reactor 61 (35 Step), 6-1 The valve is turned ON for about 5 seconds and the reactor 61 is first washed by the first rinse process (36 Step), and the drain is completely drained by turning the 6-4 valve ON for about 20 seconds (37). Step), 6-1 valve is turned on for about 5 seconds again, and the reaction tank 61 is washed secondly by the second rinse process (38 Step), and 6-4 valve is turned on for about 20 seconds completely. Drain (39 Step).

Thereafter, the hardness measuring device 60 turns on the 6-1 valve for about 0.1 second to receive the current treated water for hardness measurement, and then reacts the treated water treated from the first water purifier 10 currently in operation. It is quantified by about 500cc by the level sensor 62 and flowed into the corresponding reaction tank 61 (40 Step).

Then, the hardness measuring device 60 stabilizes the treated water in the reaction tank 61 for about 1 second (41 Step).

Next, the hardness measuring device 60 rotates the 6-5 discharge pump of the EBT reagent tank 63 by 18 rotations to inject the quantitative EBT reagent into the reactor 61 (45 Step), and at the same time, the NH ₃ The 6-6 discharge pump of the reagent tank 64 is rotated 8 times, and the quantitative NH ₃ reagent is introduced into the reactor 61 (46 steps), thereby treating the soft water of the first water purifier 10 introduced into the reactor 61. A number of hardness components (Ca2 ⁺ , Mg2 ⁺ ) is complexed so that hardness can be measured.

Once again, the reaction reagent treatment sunae hardness components (Ca2 ^+, Mg2 ⁺⁾ of the first water purifier 10 in accordance with the input of (EBT reagent, NH ₃ reagent) is a complex salt, and a color change occurs, and wherein said 6-5 The discharge pump and the 6-6 discharge pump quantify the emission of EBT reagent and NH ₃ reagent at the ratio of 18: 8 as the motor rotates.

Then, the hardness measuring device 60 is quantified by the reaction reagent to stabilize the reaction tank 61 containing the treated water undergoing the complex salt reaction for about 5 seconds (47 Step).

Thereafter, the hardness measuring device 60 opens the 6-5 valve for about 60 seconds to inject the outside air into the reaction tank 61 to perform an air stirring process for completely reacting the internally treated water with the EBT reagent and the NH ₃ reagent. (48 Step).

In addition, the hardness measuring device 60 stabilizes the reaction tank 61 filled with the treated water, the EBT reagent, and the NH ₃ reagent for about 10 seconds to prevent shaking of the treated water as the measurement target (49 Step).

Finally, the hardness measuring device 60 transmits the transmitted beam through the beam sensor 65 to the treated water in the reaction tank 61, and thus the change in the dyeing color of the internal treated water is measured by the measurement control unit 66. And detect and quantify and report the hardness measurement to the manager through the measurement output unit 67 (50 Step).

Through the above-described automatic hardness measurement process, the hardness of the treated water softened in the currently operated water purifier 10 is measured, and the measured value is output to the manager through the measured value output unit 67.

On the other hand, the movable control unit 70 receiving the sensor output value for the treated water of the first normal water purifier 10 is operating two hardness measurement values output through the step S20, that is, the reference water tank The hardness measurement value 3500 of the reference water quantified to hardness 0 (3500) of 30 and the hardness measurement value for the treated water of the first water purifier 10 currently operating (S30), and the reference water and treatment In the case where the difference between the hardness measurement values is 1000 or less, in other words, when the hardness measurement value of the treated water is more than hardness 2 (4500), the 50th step of the automatic hardness measurement of the treated water through the step S20 is repeated and the hardness measurement device 60 ) Again detects and compares the hardness measurement value of the reference water and the hardness measurement value of the treated water.

At this time, the automatic hardness measurement and comparison process for the reference water and the treated water is repeatedly operated at intervals of about 20 minutes to immediately determine the saturation state of the ion exchange capacity of the water purifier.

On the other hand, when the determination result of the step S30, the difference between the hardness measurement value between the reference water and the treated water is 1000 or more, in other words, the hardness measurement value of the treated water is the hardness 2 (4500) or more, the cation in the first water purifier 10 When it is determined that the ion exchange capacity of the exchange resin is saturated, the operation control unit 70 stops the operation of the first water purifier 10 which is in operation and replaces it with the second water purifier 20 which is in standby after regeneration is completed. It is activated (S40).

In this case, the 2-2 valve for the inflow of raw water and the 2-5 valve for discharging the treated water in the second water purifier 20 which is replaced and operated normally are switched to the ON state, and the remaining 2-1 valves, The 2-3 valve, 2-4 valve and 2-6 valve are OFF.

Then, all the valves (2-1 valve, 2-2 valve, 2-3 valve, 2-4 valve, 2-5 valve and 2-6 valve) of the first water purifier 10 in the regeneration standby state after completion of operation. Is switched off.

In addition, all the valves and modules (6-1 valves, 6-2 valves, 6-3 valves, 6-4 valves, 6-5 valves, 6-6 valves, 6 -7 valve, reactor level sensor 62 and measured value output section 67 are OFF.

In addition, all the valves (4-2 valves and 4-3 valves) except the 4-1 valve for regenerant addition are turned off.

Therefore, the second water purifier 20 which is replaced and operated normally discharges the raw water through the 2-2 valve and undergoes its own water softening process, and then discharges the treated water to the condensate tank 50 through the 2-5 valve. do.

On the other hand, the first water purifier (10) is stopped by the ion exchange capacity of the cation exchange resin saturation, backwashing step (10 Step) for backwashing the water to remove the turbidity for the regeneration of the cation exchange resin, and brine (NaCl) A rejuvenating agent is introduced to activate the corresponding cation exchange resin (20 Step), and settling politics (30 Step) for stabilization (S50).

First, during the backwashing step (10 Step), the movable control unit 70 is about 1-1 valve for drain and 1-3 valve for backwash water injection when all the valves of the first water purifier 10 is turned off. Turn on the water for 30 minutes and backwash the water upward in the water purifier using raw water to remove suspended matter or colloidal material accumulated in the resin layer, and then stably set the first water purifier 10 for about 10 minutes. The backwashing process is completed.

In addition, during the medicine pouring process (20 Step), the movable control unit 70 switches only 1-4 valves and 1-6 valves for salt water input to the ON state when all the valves of the first water purifier 10 are turned off. In the same manner, the 4-3 discharge pump for brine discharge from the brine tank 40 is turned on so that the brine of the brine tank 40 is introduced into the first water purifier 10 and at the same time the brine for maintaining the concentration. By switching the 4-1 valve for regenerant input of the tank 40 to the OFF state, according to the brine discharge amount control of the brine discharge level sensor 41, by switching the corresponding 4-3 discharge pump for the brine discharge OFF again, Brine for regenerating the cation exchange resin of the first water purifier 10 is introduced into the first water purifier 10.

At the same time as the brine discharge from the brine tank 40 is stopped, the valves 1-4 and 1-6 of the first water purifier 10 are turned off. Open to fill the raw water, and lock the corresponding 4-2 valve for raw water inflow according to the level adjustment of the raw water inflow level sensor 42 and at the same time, open the 4-1 valve for regenerant injection again to recover the brine tank 40. do.

In addition, during the settling and policing process (30 Step), the operation control unit 70 is to turn off all the valves of the first water purifier 10, the brine injection is completed to the OFF state and to perform the stabilization for about 1 hour.

Thereafter, the movable control unit 70 passes through a washing step of passing the raw water from the upper part of the tower during the regeneration of the first water purifier 10 and washing the ion exchange resin again. In this case, the hardness measuring device 60 The hardness of the flushing water during the regeneration of the first water purifier 10 is measured repeatedly at 10 minutes, and the automatic hardness measurement process for the flushing water is also performed according to 50 Step as shown in Table 1 above. Measuring the hardness of the reference water of the reference water tank 30 quantified by the hardness 0 (3500) and measuring the water hardness of the corresponding first water purifier 10 in the washing state during regeneration, and measuring the measured hardness of each measurement output unit ( It is reported to the manager through 67) (S60).

Through the above-described automatic hardness measurement process, the hardness measuring device 60 measures the hardness of the wash water of the first water purifier 10 in the current regeneration process, and measures the measured value to the manager through the measured value output unit 67. Will be reported.

On the other hand, the operation control unit 70 receives the sensor output value for the wash water of the first water purifier 10 during the washing process during the regeneration, the two hardness measurement values output through the 60 step, that is, By comparing the hardness measurement value (3500) of the reference water quantified to the hardness 0 (3500) of the reference water tank 30 and the hardness measurement value for the wash water of the first water purifier 10 in the current washing process (S70), If there is a difference between the hardness measurement value between the reference water and the flushing water, that is, if the hardness measurement of the flushing water is more than 0 (3500) in hardness, the water through the step S60 after continuing washing with the first water purifier 10 is performed. By repeating 50 steps of the automatic washing of the wash water, the hardness measuring device 60 again repeats the process of detecting and comparing the hardness measure of the reference water and the measure of the hardness of the wash water.

At this time, the automatic hardness measurement and comparison process for the reference water and the wash water is repeatedly operated at intervals of about 10 minutes to immediately grasp the recovery state of the ion exchange capacity of the water purifier.

At this time, the hardness with respect to the said 1st water purifier under water does not necessarily need to be hardness 0 (3500), and it does not matter as long as it is a value below hardness 0 (3500). As described above, when the washing water reaches zero hardness when washing the water purifier, the washing water is injected into the reference water tank 30 by a predetermined amount and the corresponding water is replaced at a predetermined cycle, thereby reducing the contamination and water quality of the reference water. This prevents the malfunction of the reference water.

On the other hand, when the determination result of the step S70, there is no difference between the hardness measurement value between the reference number and the flushing water, or rather the hardness measurement value of the flushing water is lower than the hardness measurement of the reference water, that is, the hardness measurement of the flushing water is hardness 0 When it is determined that the ion exchange capacity of the cation exchange resin in the first water purifier 10 is restored to less than or equal to 3500, the operation control unit 70 causes the first water purifier 10 to wait for operation (S80). ).

During this regeneration, the regeneration process including backwashing, yakju, needle, washing and measuring of the first water purifier 10 in the water washing state takes about 2 hours and 30 minutes to the second water purifier 20 in the normal operation state. The start time of automatic hardness measurement is stable after about 8 hours after the normal operation of the second water purifier 20.

An example of the hardness measurement value for determining the replacement and regeneration completion of the water purifier according to the hardness measurement value for the treated water and the wash water is shown in the graph of FIG. 7. Referring to the graph of FIG. 7, the hardness of the water purifier at “2” is increased to a hardness of 0 (3500) or more, and the hardness of the water purifier at “1” is greater than hardness 2 (4500) of the replacement set value. The water purifier is replaced with the water purifier. That is, compared to the reference water maintaining the hardness 0 (3500) constant, the hardness measurement value for the treated water represents the hardness 2 (4500), so that the measured difference value is 1000, which means the time of replacement of the water purifier.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited to drawing.

As described above, the hard water softening device having the automatic hardness tester shown in the present invention is a hardness component (TOTAL HARDNESS. Automatic measurement and quantification of Ca2 ⁺ and Mg2 ⁺ )) to determine the saturation and flushing of cation exchange resin capacity in one cycle including the water flow and regeneration of each water purifier. The automatic water regeneration and water purifier replacement allow water to be used in boilers with a large variation in average daily water consumption compared to the water purifier replacement method based on the average exchange capacity of the conventional water purifier or the timer replacement method based on the average usage time. Loss is significantly reduced and untreated water due to loss of exchange capacity of water purifier There is an effect in which the risk is removed completely automated process to be put into the boiler able to get a safe training.

1 is a view showing a water softening device to which the present invention is applied.

Figure 2 is a view showing an actual installation example of the soft water softening device to which the present invention is applied.

3 to 5 are views showing an actual installation example of the hardness measuring device to which the present invention is applied.

Figure 6 is a flow chart generally showing the operation method of the water softening device to which the present invention is applied.

7 is a graph showing measurement output examples of the hardness measurement device to which the present invention is applied.

<Description of the symbols for the main parts of the drawings>

10: first water purifier 20: second water purifier

30: reference water tank 40: brine tank

41: salt discharge level sensor 42: raw water input level sensor

50: condensate tank 60: hardness measuring device

61 reactor 62 reactor level sensor

63: EBT reagent bath 64: NH ₃ reagent bath

65 beam sensor 66 measurement control unit

67 measurement value output unit 70: operation control unit

Claims (6)

At least two water purifiers having an ion exchange resin inside and producing softened treated water by attaching a hardness component contained in raw water supplied from the outside to the ion exchange resin through corresponding ion exchange to remove the hardness component (10). , 20); Salt water tank 40 for supplying the brine for the regeneration of the ion exchange resin to the water purifier of the regeneration process is saturated ion exchange capacity of the water purifier (10, 20); Reference water tank 30 for receiving and storing the treated water of the reference value capable of ion exchange in the water purifier (10, 20); Measuring the hardness of the reference water for the reference water tank 30 and receiving the treated water or flushing water from the water purifier of the normal water softening process of the water purifier (10, 20) or the water purifier of the ion exchange resin regeneration process, respectively A hardness measuring device 60 which repeatedly measures the hardness of the treated water or the wash water and provides the hardness measured value of the reference water and the hardness measured value of the treated water or the wash water; And If the hardness measurement value for the treated water of the water purifier which is normally operated as the result of the hardness measurement of the hardness measuring device 60 is carried out to control for the soft start and regeneration of the water purifier (10, 20) of the water purifier An operation control unit 70 for stopping the operation and replacing the air purifier and completing the regeneration of the corresponding water purifier when the hardness measurement value for the flushing water of the water purifier to be regenerated is less than or equal to the set regeneration reference value; Hard water softening device having an automatic hardness tester comprising a. The method of claim 1, The hardness of the reference water stored in the reference water tank 30 is hardness 0 (3500), The operation reference value of the hardness of the treated water, which determines whether the soft water is continuously operated by the operation control unit 70, is hardness 2 (4500), and the water wash hardness that determines whether the water is continued during regeneration of the water purifier being operated is Hard water softening device having an automatic hardness tester, characterized in that the regeneration reference value is hardness 0 (3500). The method according to claim 1 or 2, The hardness measuring device 60, Reagent tanks 63 and 64 for storing indicators for promoting complex salt chemical reaction of water; Receives a predetermined amount of reference water from the reference water tank 30 or treated water from the water purifiers 10 and 20 as measurement water, and receives reaction reagents from the reagent tanks 63 and 64. A reaction tank 61 mixed with the measured water; A beam sensor (65) which irradiates a transmission beam at a predetermined angle to the reaction tank (61) to recognize the degree of complexing with respect to the number of measurements in the reaction tank (61); A measurement control unit 66 for quantifying the change in complexing dyeing value of the measured number recognized by the beam sensor 65 by the hardness measurement value; And A measurement value output unit 67 which displays the hardness measurement value of the measurement control unit 66 to the outside and provides it to the movable control unit 70; Hard water softening device having an automatic hardness tester comprising a. The method of claim 3, wherein The sensor beam transmission angle of the beam sensor 65 with respect to the reactor 61 is fixed to 85 degrees with respect to the vertical direction of the reactor 61, the automatic hardness characterized in that the sensor beam is irradiated to the side of the reactor and transmitted Hard water softening device having a measuring device. The method of claim 4, wherein The reagent tanks 63 and 64 store EBT reagents and NH ₃ reagents for the complexation of the measurement water, respectively, and the ratio of the EBT reagent and NH ₃ reagent to be added to the corresponding reaction tank 61 when the measurement water is complexed is 18: Hard water softening device having an automatic hardness tester, characterized in that 8. The method of claim 5, The hardness measuring device 60 Hard water softening device having an automatic hardness tester, characterized in that it further comprises an air agitation valve for promoting the complex salt chemical reaction of the reaction reagent and the measurement water in the reaction tank (61).